1 /*
2 * 0BSD
3 *
4 * BSD Zero Clause License
5 *
6 * Copyright (c) 2019 Hermann Meyer
7 *
8 * Permission to use, copy, modify, and/or distribute this software for any
9 * purpose with or without fee is hereby granted.
10
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
16 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 *
19 */
20
21
22 #include "xwaveview.h"
23 #include "xwaveview_private.h"
24
25
add_waveview(Widget_t * parent,const char * label,int x,int y,int width,int height)26 Widget_t* add_waveview(Widget_t *parent, const char * label,
27 int x, int y, int width, int height) {
28
29 Widget_t *wid = create_widget(parent->app, parent, x, y, width, height);
30 wid->label = label;
31 wid->flags |= HAS_MEM;
32 wid->scale.gravity = CENTER;
33 WaveView_t *wave_view;
34 wave_view = (WaveView_t*)malloc(sizeof(WaveView_t));
35 wave_view->wave = NULL;
36 wave_view->size = 0;
37 wid->private_struct = wave_view;
38 wid->func.expose_callback = _draw_waveview;
39 wid->func.mem_free_callback = waveview_mem_free;
40 return wid;
41 }
42
update_waveview(Widget_t * waveview,float * wave,int size)43 void update_waveview(Widget_t *waveview, float* wave, int size) {
44 WaveView_t *wave_view = (WaveView_t*)waveview->private_struct;
45 if (size !=wave_view->size && size>1) {
46 free(wave_view->wave);
47 wave_view->wave = NULL;
48 wave_view->size = size;
49 wave_view->wave = (float*)malloc(size*sizeof(float));
50 }
51 if (wave_view->size>1) {
52 memcpy(wave_view->wave, wave, size*sizeof(float));
53 expose_widget(waveview);
54 }
55 }
56
waveview_mem_free(void * w_,void * user_data)57 void waveview_mem_free(void *w_, void* user_data) {
58 Widget_t *w = (Widget_t*)w_;
59 WaveView_t *wave_view = (WaveView_t*)w->private_struct;
60 free(wave_view->wave);
61 free(wave_view);
62 }
63